如何测试一个不存在的控制器动作？

Question

ProductsController 中只有两个可访问的操作：

# /config/routes.rb
RailsApp::Application.routes.draw do
  resources :products, only: [:index, :show]
end

相应地设置测试：

# /spec/controllers/products_controller_spec.rb
require 'spec_helper'

describe ProductsController do

  before do
    @product = Product.gen
  end

  describe "GET index" do
    it "renders the index template" do
      get :index
      expect(response.status).to eq(200)
      expect(response).to render_template(:index)
    end
  end

  describe "GET show" do
    it "renders the show template" do
      get :show, id: @product.id
      expect(response.status).to eq(200)
      expect(response).to render_template(:show)
    end
  end

end

您将如何测试其他CRUD actions 是否不可 可访问？这可能会在未来发生变化，因此测试将确保任何配置更改都会被注意到。
我发现be_routable matcher 看起来很有希望涵盖测试用例。

---

我推荐这个post by Dave Newton which describes when and why to test controller actions。

Answer 1

这是我想出的：

context "as any user" do
  describe "not routable actions" do
    it "rejects routing for :new" do
      expect(get: "/products/new").not_to be_routable
    end
    it "rejects routing for :create" do
      expect(post: "/products").not_to be_routable
    end
    it "rejects routing for :edit" do
      expect(get: "/products/#{@product.id}/edit").not_to be_routable
    end
    it "rejects routing for :update" do
      expect(put: "/products/#{@product.id}").not_to be_routable
    end
    it "rejects routing for :destroy" do
      expect(delete: "/products/#{@product.id}").not_to be_routable
    end
  end
end

但是一项测试失败了：

Failure/Error: expect(get: "/products/new").not_to be_routable
  expected {:get=>"/products/new"} not to be routable, 
  but it routes to {:action=>"show", :controller=>"products", :id=>"new"}

---

如果您采用完全不同的方法来测试不存在的路线，请随意添加您自己的解决方案。